典礼|てんれいtenrei[0]heiban (flat)

1. no-adjectiveceremony; etiquette; courtesy; (Catholic) liturgy

• Synonym式典しきてんFormalA formally staged ceremony — commemorations, opening ceremonies and the like; the most common word in modern usage, while 「典礼」 sounds old-fashioned or means liturgy.
• Synonym儀式ぎしきNeutralThe broadest term: ceremonies performed according to set rules — religious rites, festivals, celebrations and condolences. The neutral, general-purpose word.
• Synonym式しきNeutralIn everyday speech, weddings and graduations are usually 「結婚式」 and 「卒業式」; 「式」 often serves as a suffix for such events.
• SynonymセレモニーNeutralA loanword for ceremonies of many kinds — openings, award presentations, funerals. Compared with 「式典」, it carries an extra layer of loanword flavor.
• Synonym儀典ぎてんWrittenRefers to ceremonies and rites, and also to rules governing them; rare in written prose. For a ceremony itself, everyday speech uses 「儀式」.
• Related儀礼ぎれいWrittenCenters on the forms of courtesy themselves — diplomatic protocol, social etiquette — rather than a whole ceremony. Written/formal prose.

For a formal ceremony, 「式典」 is the modern default; 「儀式」 is the general word for rituals of any kind; weddings and graduations take 「〜式」. 「典礼」 itself now mostly turns up in imperial ceremonies or Catholic liturgy; 「儀礼」 is etiquette, 「儀典」 rare written prose.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 一定いっていの儀式ぎしき。